Aeroplane-stabilizer



A. CHIARELLI.

AEROPLANESTABILIZER.

APPLICATION FILED MArLz. 191.8.

1,340,214e Patented M.y18,192o.

2 SHEETS-SHEET I.

wx M@ A. CHIARELLI.

AEROPLANE STABILIZER.

APPLICATION FILED MAR- 2. I9I8.

Panted May 18, 1920.

2 SHEETS-SHEET 2- ANTHONY CHIARELLI, OF NEW YORK, N.

AEROPLANE-STABILIZER.

Specification of Letters Patent. Patented Blay 18, 1920.

Application iled March 2, 1918. Serial N0. 219,955.

vice which will `act to restore the aeroplane to a horizontal position should it for any reason dip on one end or the other. To carry Ymy inventionl into practice, l place a propeller, at each end of the plane, said propellers being disposed in a horizontal position and each acting to force its respective end of the plane upwardly should said end dip to an undesirable extent, special means being provided to control the operation ofthe propellers. v

will now proceed to describe my invention in detail, the novel features of which l will point out in the appended claims, reference being had tothe accompanying drawing, formmg part hereof, wherein-:

Figure 1 is a front view of an aeroplane embodying my improvement; l Fig. 2 is anJenlargedlongitudinal sectional view of the controller-box and pendulum; s

Fig. 3 is across sectional view thereof; the section being taken on a line 3 3 in Fig. 2;

Fig. 4 is a'diagrammatic view of the electrical circuit for the motor for one of the propellers; and

Fig. 5 is an enlarged sectional detail view of the single acting propeller at the right of Fig. 1.

Y In the drawing, a bi-plane is indicated by the numeral .4 having the usual aviators car 5 which carries the motor (not shown) for operating the propeller 6. .The power for the motors, which form part of my in-l ventionwill be furnished by the storage battery (not shown) with which the modern aeroplane is equipped for self-starting or searchlight purposes.

My improvement comprises propellers 7 and 8, motors 9 and 10 therefor, a pendulum 1,1, and electric circuits 12 and 13 for the motors 9 and 10, respectively. A part of each circuit consists of resistances 14 and 15, arms 16 and 17 of the pendulum 11, a brush 18 carried by the pendulum, and a contact 19 located upon but insulated fromy the controller-box 20. The pendulum 11 includes a weight 21, the function of the pendulum being toy cause either the motor 9 or the motor 10l to actuate its respective propeller, should the plane dip to an undesirable extent, by closing the circuit for said motor through theresistances 14 or 15.'

As can be seen in Fig 1, each propeller 7 and 8 is carried by a vertical shaft 22 carrying a bevel-gear 23 meshing with a bevelgear 24 on the shaft 25 with which each motor 9 and 10 is equipped. The motor 9 is connected to a storage battery/26 (Fig. 4), within the car 5, by the circuit 12, and the motor 10 is connected to said battery by a similar circuit 13. The contact 19 in the box .2O is common to both circuits as well as the brush 18.

Should the plane dip at the end 27 to an undesirable extent, the pendulum 11 would swing to the left, as per arrow 28 in Fig. 2, causing the brush 29, on the pendulum arm 16, to come in contact with the resistance contact 30, 'which would connect the circuit for the ymotor 9 through the resistance coils 31 and 32. When thus connected, the motor would rotate relativelyslow, thereby operating the propeller 7 to force said end upwardly. Should the said end ofthe plane continue. to dip, the brush' 29 would come in contact with contact 33, causing the current to flow through the resistance 32P only.

`The motor 9, in this event, would rotate at a'higher speed, thereby rotating the propeller 7 at a higher speed and exerting more power to right the plane. I Should the dip of the plane be dangerously extensive, the brush 29 would come into contact with contact 34, which would cut out all the resist' ance; hence the propeller would be actuated to the maximum speed. The circuit for motor 10 is the same as above described, and is controlled in a similar manner should the plane dip at the end 35. In this event, the pendulum would swingcto the right as per arrow 36, causing the` brush 37 to move across the resistance contacts' of the controller 15. By meansof the controllers 14- and 15, Iam able to cause the stabilizing propellers to rotate at a speed, proportionate to the dip free to perform its function of other words, by pivotally connecting theV controller-box to the plane, the pendulum 11 will hang in a vertical position whether the planeabe horizontally positioned, during flight, or inclined upwardly or downwardly; hence the said pendulum Willrbe controlling the circuits for ther motors 9 and 10, as the plane might dip while liding to the earth or arising therefrom.- rackets and 41 serveias bearing members for the trunnions 42 and 43. The pendulum 11 is mounted on a pivot-pin 44 carriedsby the box 20,-said' pin being insulated by a' bushing 45 said box.

The single acting resistances and pendulum are indicated in' Fig. 5 bythe numerals 48, 49, 50 and 52, respectively. In this form of my invention, each pendulum 52 carries a single arm 53 having a brush 54 to close the circuit between the resistances and contact 55. One of the sets of resistances 48, 49, 50 will be connected to theamotor to control a forward speed, and the other a reverse speed. In other words, 46 and 47 are virtually the controllerl 11 divided into halves.

from

of the plane; the greater the dip Il lliat I claim as my invention is: 1. lIn combination with an aeroplane, a` controller box pivotally secured thereto, a

the box,\a pendulum pivotally connected to `said box intermediate said resistances, arms radiating from the pendulum one on each side thereof and extending toward said resistances, a brush carried by each arm and arranged to contact with said resistances,'a motor in circuit with each series of resistances, and astabilizing propeller actuated by each motor. i

2. In combination with an aeroplane, a controller box, a stationary contact plate therein, aseries of resistances located within the box at each side thereof, a pendulum pivotally connected intermediate its ends to said box between said resistances andbelow the stationary Contact, a brush carried by tlie upper end of said pendulum in constant engagement with the stationary coni tact within the box, aair of radiating arms extending" from the sldes of the pendulum toward said resistancesa9brusl1 carried by each arm and arranged to contact with said resistances, a motor in circuit with 'each series ofresistances, and a stabilizing pro' peller 'actuated by each motor.

Signed at New York city, N. Y., this 24th day of October 1917.

ANTHONYl CHIARELLI,

Witnesses:

TROS. HOWARD, WALTER CHEETBAM.

series of resistances -located at yeach side of 40 

